Sewing-machine



B511. THOMAS. Sewing IVIeLohine.4

No. 230,972'. Patented A ug. 10,1880.

WI'ESEES. Z

NA-PETERS. PHOTO LITHOGRAPM l I O UNITED STATES ATENT rricE.

EDDY T. THOMAS, OF NEW YORK, N. Y., ASSIGNOR TO THE GOLD MEDAL SEWINGMACHINE COMPANY, OF ORANGE, MASSACHUSETTS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 230,972, dated August10, 1880. i Application led February 2l, 1880.

To all whom it may concern:

Be it known'that I, EDDY T. THOMAS, of the city, county, and State ofNew York, have invented an Imlirovementin Sewing-Machines, of which thefollowing description, in connection with the accompanying drawings, isa specification.

This invention relates to sewing-machines, and has for its object theproduction of a dur able, easy running, and rapidly-operating;oscillating-shuttle machine. In this my machine the shuttle-carrier hasa spirally-twisted horizontally placed stem, which is embraced andoscillated by a reciprocatable link attached to a crank-pin at the lowerend of a rotatable shaft provided with a bevetgear in engagement withand driven by a bevel-pinion on the needle-operating,` sha-ft, as in theSinger machine, such connection insuring positive motion for the needleand shuttle.

Figure 1 represents, in side elevation, partially in section, asewing-machine showing my invention; Fig. 2, an under-side view thereof,and Fig. 3 a detail of the shuttle-carrier.

The cloth-supporting, plate a., goose-neck b, feeding,` device c, itsactuating,` and adjusting` devices d. e, and the positively-drivenneedlcactuating shaftfare allot' usual construction. Theshuttle-carrierg has a horn, h, to engage the shuttle (not shown) andturn it backward and forward or oscillate it as the carrier isoscillated. This carrier has connected with it a twisted shaft, t', madelike the Grover & Baker looper-shaft, and somewhat like that shown inUnited States Patent No. 188,515.

The twisted shuttle-shaft is mounted in bearings or ears in a plate, j,adjustably connected with the under side of plate a by the screws 2. Theend ot' the shaft z' is supported by the adjustable centering-screw 3.The horizon- 4o tally-extended twisted or spiral shaft il is embraced bythe slotted end of link k, which, attached to the crank-pin l of thedisk m on the rotatable vertical shaft a, is reciprocated rapidly,thereby quickly and easily oscillating` the said shuttle-carrier. Thebevel-pinion ois engaged with and driven by the bevel-pinion p on themain shaft j'.

By placing the spirally-twisted shuttledriving' shaft in a horizontalposition closely un- 50 der the cloth-plate and actuating it by ahorizontal link and crank-pin, such as described, the crank-pin being`carried at the lower end ot' a vertical shaft, I am enabled to produce amost compact, simple, rapid, and easy-running machine, and at the sametime retain the frame-work of the machine in the most popular shape forfamily machines.

I claim- In a sbrittle-sewing,` machine, the oscillata- 6o bleshuttle-carrier, its horn, and the connected spirally-twisted shaft t',and the reci procatable link 7c to embrace the said shaft, combined withthe crank-piu, the vertical shaft. a, and bevel-pinions and main drivenshaft, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDDY TAYLOR THOMAS.

Witnesses SPENCER C. Do'rY, ALLEN ScHENoK.

